Source: xblocks/utils/createShadowRoot.js

  1. import context from '../../context';
  3. const proto = context.Element.prototype;
  4. const createShadowRoot = proto.createShadowRoot ||
  5.     proto.webkitCreateShadowRoot ||
  6.     proto.mozCreateShadowRoot ||
  7.     proto.msCreateShadowRoot ||
  8.     proto.oCreateShadowRoot ||
  9.     function () {};
  11. /**
  12.  * Creating a shadow root.
  13.  * Does not create the existing shadow root.
  14.  *
  15.  * @example
  16.  * import createShadowRoot from 'xblocks-core/utils/createShadowRoot';
  17.  * var root = createShadowRoot(node);
  18.  *
  19.  * @module xblocks-core/utils/createShadowRoot
  20.  * @param {HTMLElement} node
  21.  * @returns {ShadowRoot}
  22.  */
  23. export default function (node) {
  24.     return node.shadowRoot || ((context.HTMLSlotElement || context.HTMLContentElement) && createShadowRoot.call(node));
  25. }